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%I #3 Mar 30 2012 16:50:06
%S 1,1,3,4,17,13,77,128,167,73,319,1294,30697,28211,8707,9728,17587,
%T 18181,6517513,3084316,5855671,2786599,244579999,116918176,560006983,
%U 134354573,3099540819,745984697,83423830027,80530073893,2412760934249,4669066440704,565308230449
%N Numerator of Sum_{k=0..[n/2]} 1/binomial(n,k).
%e 1, 3/2, 4/3, 17/12, 13/10, 77/60, 128/105, 167/140, 73/63, 319/280, 1294/1155, 30697/27720, 28211/25740, 8707/8008, 9728/9009, 17587/16380, 18181/17017, ... = A100560/A100561
%K nonn,frac
%O 0,3
%A _N. J. A. Sloane_, Nov 28 2004
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